Mighty Max ML35-12GEL 12V 35AH GEL NB Replacement Battery — Compatible with Quickie Design V521

The ML35-12GEL is a 12V 35AH GEL rechargeable, maintenance-free battery from Mighty Max. Its gel-electrolyte design reduces self-discharge compared to AGM batteries, so it retains charge longer when stored—making it an excellent upgrade option. Engineered to deliver stable power across a wide range of temperatures, this GEL battery performs reliably in both hot and cold conditions. Safety and durability are improved by a thick, non-spillable gel paste that lowers the chance of leaks and harmful fumes while increasing resistance to vibration and shock for rugged use. Backed by Mighty Max’s reputation for dependable products, this model provides enhanced discharge characteristics, better overall performance, increased safety, and a longer service life. Compatible with Quickie Design V521.